Electrically-heated tool.



PATENTED JULY 2, 1907.

wir Qw'f- A TTORN Y.

UNTTED STATES vieATiaiNT onirica.

WALTER G. CLARK, OF NEW YORK, N. Y., ASSIGNOR TO PARKER-CLARK ELECTRIC COMPANY, OF NEW YORK, N. Y., A CORPORATION OF NEW JERSEY.

ELECTRICALLY-EATED TOOL.

Specification of Letters Patent.

Patented July 2, 1907.

Application filed October 6,1906. Serial No. 337.817. I

which is intended to carry a pen, electric contact or analogous metallic instrument in a convenient way so that the saine may be quickly and highly heated and can be easily placed in or removed from the tool'.

My invention is especially useful in carrying into effect in certain-special ways the process of producing coatings of metallic iridiuin set forth in Letters Patent of the United States, No. 805,316, dated November 2l, 1905, though the tool can be used for other purposes.

In coating pen points and electric contacts with iridium it is difficult by. ordinary means to apply the iridiuni in the right quantity and at the precise part Where it is needed. I find in practice that the metal as it is produced, has a tendency to work away slightly fi'oin the source of heat. `Consequently I have found that by supporting a pen in a h eated holder so that the pen will become quickly heated but with the point protruding and then bringing the point into a composition of iridium ammonium chlorid and ammonium chlorid, as set forth in the patent above referred to, the metal is quickly reduced and adheres to thepen point.

The objectof my invention is to produce a convenient holder for carrying pens, contact rivets and analogous things which will heat them rapidly-and will permit of their being easily placed in position or removed.

With these ends in view my invention consists of an electrically heated` instrument, the construction of which will be hereinafter described and the novel features claimed.

Reference is to be had to the accompanying drawings forming a part of this specification, in .which similar figures of reference indicate corresponding parts in all the views. I

Figure 1 is a longitudinal section of the tool embodying my invention; Fig. 2 is a longitudinal section of the tool head the 'section being at right angles to that is a cross section through I have an internal heater 10 in the in rod 'form if preferred,- and I preferably make the heat-ing portion 10 as well as the other heating parts 12 and 13 to be presently referred to, of quartz as this material is a fairly goed conductor of heat, but a nonconductor of electricity. In this way-I can bring the quartz into Contact with the article to be heated without the necessity of inici-posing a non-conductor through which it may be dirTicult to drive the necessary heat. Thus I gain in efficiency over the ordinary heater.

The tube o'r core 10 isheatcd by a heater 11 Vwhich is'coiled around it and is shown conventionally as a resistance wire, but it may conveniently be a resistance coating on the outer wall of ,the tribe and it will be seen that the saine heater will lheat the tube or core 10 and the tube 12 which is concentric with the tube 1() and Alies against the heater 11. The tube 12 can have its lower or outer end turned inward as shown to prevent any displacement of the heating parts.

Surrounding the tube 12 and concentric therewith is another heating tube 13 which like the others, is preferably of quartz, and this is spaced apart from the tube 12 sufficiently to permita pen, as 1S. to be placed iii between the parts 12 and 13, as in an ordinary pen holder, and conveniently held. The tube 13 is heated by a heater 14 on its exterior' wall and the tribe can be turned up at the ends to assist in holding the heater or to prevent itfrom coming in contact with any extraneous substance, if desired. Surrounding the heater 14 is suitable insulation 15 and a casing 16 incloses the Whole heater head. In the drawings I have shown in Fig. 2, the parts 10, 12, 13 and 15, in open section instead of in black, in order that the leading lines can appear. l

The head which cairies the parts already'deseribed carries also the terminals 19 which suitably connect with the heaters 11 and 14 and these can be united in a cable 20 which extends up through a handle 2l.

If pens are" to be heated the operator takes, with a pair of nippers, the pen 18 and thrusts it into the socket between the parts 12 and 13 and the pen is instantly heated, and then by embedding its point in the salts of iridium ammonium chlorid and ammonium chlorid; the iridium metal is reduced and adheres to the pen point. If a contact as 17 is to be treated the contact is inserted in the end of the tube 10 and the projecting part can be brought into contact with the loo Having thus fully described my invention, I claim 5 as new and desire to secure by Letters Patent,.-

l. A lmndled tool having :l socket formed between concentric walls, which :1re spzlced zipnrt to produce the socket, und with :in electric heater in Contact with each wnll. v

L. A handled tool havingr :1 curved socket formed heiween concentricwnlls which :ire nen-conductors of elec'- I'ricity, and which :1re spnced npnrt to produce the socket, :ind clectricalmenns i'or lichting' the said walls.

It A hnndlcd tool having :i central 'implenient-r0ceiving socket, :ind :1 second socket with concentric Wnlls, the wells ot' both snid sockets hein;l electrically heated.y

4. A handled tool having n plurality o1' holding sockets each socket having,T walls which are non-conduetors of electricity hut conductors of heat, und electric heaters in contact with the said walls.

5. A inenting tool comprising n centrnl core which is :i non-conductor ot' electricity, :1nd has a socket in the end, :in electrimilly non-conducting tube. concentric with the snld core, an electric henter between :ind in contnct with the said core :1nd tube, :1nd n second electrically h'c-:ited tulle which is n nnn-conductor of electricity said second tulle being concentric with the first tube :ind spaced therefrom to torni :i socket between the two tubes.

(i. A handled tool having sockets with wnlls which are conductors of lient but not ot electricity. :ind electric inenting menus in direct Contact with the said socket walls.

WALTER (l. CLARK.

Witnesses: WARREN B. HUTCHINSON, FRANK L. S'runns. 

